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State standards for rolled steel 40Х9С2


Grade analogue W. Nr. Aisi Uns En Order
40Х9С2 1.4718 HW3 X45CrSi9-3 Buy from stock, view availability

Technical characteristics

The chemical composition of steel 40Х9С2 as defined by GOST 5632-72, The alloy refers to the martensitic class. Its composition includes chromium, nickel, molybdenum, titanium, manganese, copper, as well as carbon 0,4%, phosphorus, sulfur in hundredths percent. Alloying has a multidimensional effect on the quality of steel. Chromium increases hardness and corrosion resistance. Nickel gives the alloy ductility and resistance to impact loading. Manganese content above 1% increases hardness, impact strength, and wear resistance. Titanium increases stability, corrosion resistance; Copper increases ductility, prevents rusting.

Percentage composition of 40Х9С2 GOST 5632-73

C Cu Mn Cr Si Ni S P Ti Fe Impurities
0.35 - 0.45 ≤0.3 ≤0.8 8 - 10 2 - 3 ≤0.6 ≤0.025 ≤0.03 ≤0.2 Basis ≤0.3

This steel grade is used to produce both bar and sheet products. The main advantages of this steel:

  • heat resistance;
  • Resistance to sulfur-containing media;
  • Resistance to the action of wet corrosion.


Engine inlet and outlet valves, recuperator tubes, grates, fasteners. This steel is not used in welded structures. The rolled section, according to GOST 5949-75, has the short-term strength over 740 MPa.


Supplier "Auremo" offers to buy 40Х9С2 sheet, wire wholesale or in installments. Large selection in stock. Conformity to GOST and international quality standards. Always in stock sheet, wire 40X9C2 price - the best from the supplier. Buy today. Wholesale customers price - favorable.

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